JP6596981B2 - Long sheet stacking tray and image forming apparatus - Google Patents

Description

  The present invention relates to a long sheet stacking tray and an image forming apparatus.

  Image forming apparatuses such as copiers and printers are provided with a tray for loading various recording media such as various standard sizes and postcard sizes of JIS dimensions as standard. When a long sheet having a size in the longitudinal direction that is at least twice the size in the short direction is stacked, a long sheet stacking tray, which is a dedicated tray, is used. This long sheet stacking tray is generally attached to a manual feed tray provided on the side surface of the image forming apparatus main body so as to be tiltable.

  The manual feed tray is unfolded from the image forming apparatus main body when in use, but is stored in the image forming apparatus main body when not in use. However, if the conventional long sheet stacking tray is attached to the manual feed tray and the manual feed tray is stored in the main body of the image forming apparatus, the long sheet stacking tray interferes with the main body of the image forming apparatus, and thus the manual feed tray cannot be stored. .

  For this reason, the manual feed tray must be unfolded even when the long sheet stacking tray is not used. As a result, not only the installation area increases, but also the surrounding people's walking and work are hindered.

  On the other hand, when the long sheet stacking tray is removed in order to store the manual feed tray, it is necessary to separately provide a space for storing and storing the long sheet stacking tray. Further, every time the long sheet stacking tray is used, a troublesome work of attaching the long sheet stacking tray to the manual feed tray occurs.

  In order to solve this problem, a long sheet stacking tray as disclosed in Patent Document 1, for example, has been proposed. The long sheet stacking tray is supported by the manual feed tray so as to be rotatable in the vertical direction, and is folded and stored below the manual feed tray.

  However, the long sheet stacking tray of Patent Document 1 must be folded upward from the lower side of the manual feed tray when unfolding. When storing, it must be folded to the bottom of the manual feed tray. Therefore, there is a problem that deployment and storage are troublesome.

  The present invention has been made in view of such a conventional problem, and an object thereof is to provide a long sheet stacking tray that can be easily developed and stored.

The long sheet stacking tray according to the present invention is attached to a manual feed tray that is tiltable on a side surface of the image forming apparatus main body so as to be movable in the length direction of the manual feed tray via an attachment portion, and is long together with the manual feed tray. A mounting portion on which the sheet is placed , and the attachment portion supports the mounting portion pulled out from the manual feed tray so as to be pivotable in the vertical direction with respect to the manual feed tray and holds at a predetermined tilt angle. The mounting unit includes a lock unit that holds the tilted state when the mounting unit is rotated upward with respect to the manual feed tray to be tilted at the predetermined tilt angle .

  According to the long sheet stacking tray of the present invention, it is possible to easily perform development and storage.

1 is a schematic configuration diagram of an image forming apparatus according to an embodiment of the present invention. It is a perspective view which shows the accommodation state of the manual feed tray and long sheet stacking tray which concern on the embodiment. It is a perspective view which shows the unfolding state of the manual feed tray and long sheet stacking tray which concern on the embodiment. It is a perspective view of the auxiliary | assistant mounting part which concerns on the same embodiment. It is a left view which shows the structure of the attaching part which concerns on the embodiment. It is a perspective view of the mounting part and 1st support member which concern on the same embodiment. It is a perspective view in the state where the 1st support member was attached to the mounting part concerning the embodiment. It is an enlarged view of the B section of FIG. It is a perspective view which shows the attachment state of the 2nd support member which concerns on the embodiment. It is a figure explaining operation | movement of the lock part which concerns on the same embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a diagram showing a schematic configuration of a color printer 100 of a tandem direct transfer system that is an image forming apparatus according to an embodiment of the present invention.

  The color printer 100 has one manual feed tray 120 and three paper feed trays including two paper feed cassettes 121 and 122. The sheets (transfer paper) fed from the manual feed tray 120 are separated one by one from the top one by the paper feeding means 123 and conveyed toward the registration roller pair 18.

  The sheets P (transfer paper) fed from the paper feed cassette 121 or 122 are separated one by one from the top one by the paper feed unit 124 and conveyed toward the registration roller pair 18 via the conveyance roller pair 125. Is done.

  The fed sheet P is temporarily stopped by the registration roller pair 18 and the skew is corrected. Then, the sheet P is conveyed toward the transfer belt 152 as a transfer body by the rotation operation of the registration roller pair 18 by the on-control of the registration clutch. The This conveyance is performed at the timing when the leading edge of the image formed on the photosensitive drum 11M as the image carrier positioned at the most upstream position described later coincides with a predetermined position in the conveyance direction of the sheet P.

  When the sheet P passes through a paper suction nip composed of the transfer belt 152 and a paper suction roller in contact with the transfer belt 152, the sheet P is attracted to the transfer belt 152 by electrostatic force by a bias applied to the paper suction roller, It is conveyed at the process linear speed.

  Transfer rollers 151M, 151C, 151Y, and 51Bk as transfer bias applying members are disposed at positions corresponding to the photosensitive drums 11M, 11C, 11Y, and 11Bk as image carriers of the respective colors with the transfer belt 152 interposed therebetween. .

  A transfer bias having a polarity opposite to the toner charging polarity is applied to the transfer rollers 151M, 151C, 151Y, and 151Bk on the sheet P adsorbed on the transfer belt 152. Thereby, the toner images of the respective colors formed on the respective photosensitive drums 11M, 11C, 11Y, and 11Bk are transferred in the order of magenta (M), cyan (C), yellow (Y), and black (Bk).

  The sheet P that has undergone the transfer process for each color is separated from the transfer belt 152 at the downstream side of the support roller 126 and is conveyed to the fixing device 130. The toner image is fixed on the sheet P by heat and pressure by passing through a fixing nip constituted by the fixing belt 163 and the pressure roller 165 in the fixing device 130. In the single-sided printing mode, the fixed sheet P is discharged to a paper discharge tray 133 formed on the upper surface of the apparatus main body.

  When the double-sided printing mode is selected in advance, the sheet P that has exited the fixing device 130 is sent to the reversing unit, and the front and back sides of the sheet P are reversed by the unit. It is conveyed to 135. The sheet P is fed again from the duplex conveyance unit 135 and conveyed to the registration roller pair 18 through the conveyance roller pair 136 and 125. Thereafter, after passing through the fixing device 130 through the same operation as in the single-sided printing mode, the paper is discharged to the paper discharge tray 133.

  Around the four photosensitive drums 11M, 11C, 11Y, and 11Bk, charging means 12M, 12C, 12Y, and 12Bk, exposure means 13, developing means 14M, 14C, 14Y, and 14Bk, cleaning means 16M, 16C, 16Y, and 16Bk Etc. are arranged. These are simply distinguished by the European characters by color and have the same configuration. The exposure means 13 is formed as one unit, and emits exposure light 13M, 13C, 13Y, 3Bk to each of the photosensitive drums 11M, 11C, 11Y, 11Bk.

  The photosensitive drums 11M, 11C, 11Y, and 11Bk are in contact with the transfer belt 152. Transfer rollers 151M, 151C, 151Y, and 151Bk are disposed at positions corresponding to the photosensitive drums 11M, 11C, 11Y, and 11Bk, respectively, with the transfer belt 152 interposed therebetween.

  The transfer belt 152 is stretched around support rollers 126, 127, 128, and 129 as a plurality of support members. In this embodiment, the transfer rollers 151M, 151C, 151Y, and 151Bk are employed as the transfer bias applying member, but other shapes such as a brush, a brush roller, and a blade may be used.

  Next, the configuration of the long sheet stacking tray 1 provided in the color printer 100 will be described.

  As shown in FIGS. 2 and 3, the long sheet stacking tray 1 is used when a long sheet that is a long sheet that cannot be loaded on the manual feed tray 120 (cannot be conveyed while being placed on the manual feed tray 120). used. This long sheet is, for example, a sheet having a size in the longitudinal direction that is twice or more of the size in the short direction. The long sheet stacking tray 1 includes a placement unit 2 attached to the manual feed tray 120, an extension placement unit 3 attached to the placement unit 2, and an auxiliary placement unit 4 attached to the color printer main body 100a. It has.

  As is well known here, the configuration of the manual feed tray 120 will be described. The manual feed tray 120 is formed in a plate shape, and is formed in a size capable of placing a normal sheet up to A3 size. The manual feed tray 120 is provided to be tiltable on the side surface 100b on the sheet feeding side of the color printer main body 100a.

  This will be specifically described. An accommodation portion 100c that accommodates the manual feed tray 120 is formed on the side surface 100b on the sheet feeding side. A paper feeding port 100d (a normal sheet and a long sheet conveyance port) is provided in the central portion of the storage unit 100c.

  The lower end portion of the manual feed tray 120 is attached to the lower side of the paper feed opening 100d via a rotation shaft so as to be rotatable in the vertical direction. Further, an intermediate portion on the left and right sides of the manual feed tray 120 is attached to the lower side of the paper feed port 100d via the support arms 120a and 120a so as to be rotatable in the vertical direction.

  The support arms 120a and 120a are configured to hold at a predetermined tilt angle when the manual feed tray 120 is rotated downward and tilted as shown in FIGS. The predetermined tilt angle is a tilt angle at which a normal sheet or a long sheet can be conveyed in a state where it is placed on the manual feed tray 120.

  Further, the manual feed tray 120 is configured to be accommodated in the accommodating portion 100c by rotating upward from the tilted state as shown in FIGS.

  The placement unit 2 is attached to the lower side of the tilted manual feed tray 120 via the attachment unit 5 so as to be movable in the length direction 120A of the manual feed tray 120.

  The placement unit 2 is formed in a plate shape that is long in the longitudinal direction 120 </ b> A of the manual feed tray 120 so as to place a long sheet together with the manual feed tray 120. The mounting portion 2 is formed in a U-shaped cross section with an upper opening.

  A locking part 2 a is provided at the upper end of the mounting part 2. The locking portion 2a is formed to be curved upward.

  The extended mounting portion 3 is attached to the upper side of the tilted mounting portion 2 so as to be movable in the length direction 2A of the mounting portion 2. The extended placement portion 3 is formed in a plate shape that is long in the length direction 2A of the placement portion 2 so as to place a long sheet together with the manual feed tray 120 and the placement portion 2. Further, the extended placement portion 3 is formed so as to be accommodated in the placement portion 2.

  A locked portion 3 a is provided at the upper end portion of the extended placement portion 3. The locked portion 3a is detachably locked to the locking portion 2a of the mounting portion 2 while being housed in the mounting portion 2. The locked portion 3a is curved upward.

  The auxiliary placement unit 4 is attached in a state of being tilted to the upper side of the paper feed port 100d in the housing unit 100c on the side surface 100b of the color printer main body 100a.

  This will be specifically described. As shown in FIG. 4, an attachment edge portion 100e to which the auxiliary placement portion 4 is attached is provided at the upper edge of the paper feed port 100d. A pair of attachment pieces 100f and 100f are provided on the attachment edge portion 100e so as to be separated from each other and to stand upright.

  The auxiliary placement unit 4 includes a rotation shaft 42 rotatably attached to the pair of attachment pieces 100f, 100f, an auxiliary placement unit main body 41 attached to the rotation shaft 42, and both ends of the rotation shaft 42. And a pair of torsion springs 43, 43.

  The auxiliary mounting portion main body 41 is formed in a plate shape. As shown in FIG. 3, the auxiliary placement unit main body 41 has a long sheet in a state where the manual feed tray 120 is tilted and the placement unit 2 or the placement unit 2 and the extended placement unit 3 are pulled out. It is formed to be placed.

  More specifically, the auxiliary placement unit main body 41 has a front end side that is folded back to the color printer main body 100a side with the long sheet placed on the manual feed tray 120, the placement unit 2, and the extension placement unit 3. Put it on. An insertion portion 41 a through which the rotation shaft 42 is inserted is formed at the lower end portion of the auxiliary placement portion main body 41.

  The rotation shaft 42 is inserted into the insertion portion 41a of the auxiliary placement portion main body 41 and is rotatably attached to the pair of attachment pieces 100f and 100f so as to rotate the auxiliary placement portion main body 41 in the vertical direction. It is configured.

  The torsion springs 43, 43 are provided around both ends of the rotation shaft 42. The torsion springs 43, 43 regulate the rotation of the rotation shaft 42 and hold the auxiliary mounting portion main body 41 at a predetermined tilt angle. The predetermined tilt angle is a tilt angle at which the auxiliary placement unit main body 41 can place the leading end side of the long sheet.

  The mounting portion 5 supports the mounting portion 2 pulled out from the manual feed tray 120 so as to be pivotable in the vertical direction with respect to the manual feed tray 120 and holds it at a predetermined tilt angle. The predetermined tilt angle is a tilt angle at which a long sheet can be conveyed in a state where the long sheet is placed on the placement unit 2.

  As shown in FIG. 5, the attachment portion 5 includes first support members 51 and 51 attached to the left and right sides of the placement portion 2, and a second support member 52 attached to the manual feed tray 120 (see FIG. 3). The first support members 51, 51 and the second support member 52 are provided with lock portions 53, 53.

  In FIG. 5, since the attachment portion 5 is viewed from the left side, the first support member 51 and the lock portion 53 on the right side are not shown. Further, in FIG. 5, the second support member 52 is illustrated by a two-dot chain line. Further, in FIG. 5, the manual feed tray 120 is omitted.

  First, the configuration of the first support members 51 and 51 will be described. The first support members 51 and 51 support the placement unit 2 so as to be movable in the length direction 120 </ b> A of the manual feed tray 120. Each first support member 51 is formed in a substantially square shape.

  As shown in FIG. 6, a guide portion 511 that supports the placement portion 2 and guides the movement of the placement portion 2 is provided on the inner surface side of the first support member 51. In addition, in FIG. 6, the state which turned the 1st support member 51 and the mounting part 2 upside down is shown.

  The guide portion 511 is formed in a groove shape extending in the length direction 120 </ b> A of the manual feed tray 120. The guide portion 511 is formed so that one end portion 21 on the left and right sides of the placement portion 2 is inserted and slid.

  On the upper side of the guide portion 511 (lower side in FIG. 6), a guide portion upper side configuration portion 512 that constitutes the guide portion 511 is formed. The upper surface 21 a of the end portion 21 of the placement unit 2 is in contact with the lower surface 512 a of the guide unit upper component 512. The lower surface 512a is formed such that front and rear end portions (both end portions in the length direction 120A) are raised more than other portions. Thereby, the lower surface 512a is formed in the surface with unevenness.

  On the lower side of the guide portion 511 (upper side in FIG. 6), two guide portion lower side constituting portions 513 and 513 constituting the guide portion 511 are formed in a state separated in the length direction 120A. The lower surface 21b of the end portion 21 of the placement unit 2 is in contact with the upper surface 513a of each guide unit lower component 513.

  On the inner side of the first support member 51, a pressing portion 514 is provided between the two guide portion lower side configuration portions 513 and 513. The pressing portion 514 includes an arcuate spring portion 514a that extends while curving upward from the bottom portion 51a of the first support member 51, and a projection portion 514b provided on the upper end portion (tip portion) of the spring portion 514a. Yes.

  The spring portion 514a has elasticity (spring force). The projecting portion 514b is configured to press the lower surface 21b of the end portion 21 of the mounting portion 2 as shown in FIG. 7 using the elasticity of the spring portion 514a. In addition, in FIG. 7, the state which turned the 1st support member 51 and the mounting part 2 upside down is shown.

  As shown in FIG. 8, a recess 210 b into which the protrusion 514 b of the pressing portion 514 is fitted is provided at the pull-out limit position of the mounting portion 2 on the lower surface 21 b of the end portion 21 of the mounting portion 2. The pull-out limit position is a pull-out position where a long sheet can be placed within a range that does not come out of the first support member 51 when the placement unit 2 is pulled out.

  As shown in FIG. 7, a boss portion 515 is provided on the outer surface side of the first support member 51 on the front side (drawing side) of the pressing portion 514. A turning shaft 54 (see FIG. 5) is fitted in the boss portion 515. Furthermore, a fitting portion 516 is provided on the outer surface side of the first support member 51 on the rear side (the storage side opposite to the drawer side) from the boss portion 515.

  Next, the configuration of the second support member 52 will be described. As shown in FIG. 5, the second support member 52 rotates the first support members 51, 51 (mounting portion 2) vertically to the manual feed tray 120 via the rotation shaft 54 and the lock portions 53, 55. It is possible to support.

  As shown in FIG. 9, the second support member 52 is attached to the upper portion of the manual feed tray 120. The second support member 52 includes a second support member main body 521 attached to cover the upper surface and the left and right side surfaces of the manual feed tray 120, and a pair of attachment pieces coupled to the left and right lower ends of the second support member main body 521. 522, 522. In FIG. 9, since the second support member 52 is viewed from the left side, the right mounting piece 522 is not shown.

  The second support member main body 521 has a plate shape and an inverted U shape. As shown in FIGS. 5 and 9, the mounting piece 522 is formed in a plate shape and an L shape so as to cover the outer surface and the rear surface (the storage side surface in the length direction 120 </ b> A) of the first support member 51. Has been.

  Referring to FIGS. 5 and 9, the attachment piece portion 522 is coupled to the side surface portion 522 a that covers the outer surface of the support member 51 and the rear end of the side surface portion 522 a so that the rear surface of the support member 51 is disposed. And a rear surface portion 522b for covering.

  A support hole 522c is provided in the front side (drawer side) portion of the side surface portion 522a. The rotating shaft 54 is fixed to the support hole 522c by caulking.

  The rear surface portion 522b is provided with a restricting portion 55 that restricts the rotation of the first support member 51 (mounting portion 2). The restricting portion 55 is provided with an insertion hole 55a through which the end portion 21 of the placement portion 2 is inserted. The insertion position of the insertion hole 55a is set so as to be connected to the guide portion 511 (see FIG. 6) of the first support member 51.

  Moreover, the installation position of the insertion hole 55a is set to the rear side (storage side) with respect to the drawing position where the placement unit 2 can place the long sheet. That is, the mounting portion 2 cannot be rotated unless the end portion 21 of the mounting portion 2 is removed from the insertion hole 55a.

  Next, the configuration of the lock portions 53 and 53 will be described. The lock portions 53 and 53 are held at a predetermined tilt angle by using an upward rotation operation of the mounting portion 2, and the mounting portion 2 is rotated upward from the predetermined tilt angle. And the holding state of the mounting portion 2 is released.

  As shown in FIG. 5, each lock portion 53 includes a lock member 531 that is rotatably provided on the side surface portion 522 a of the attachment piece portion 522, an elastic member 532, and a locked member fixed to the first support member 51. 533.

  The lock member 531 is provided on the left side (storage side) of the inner surface of the attachment piece 522. A locking portion 531a protrudes from the right side (drawing side) of the lock member 531.

  One end of the elastic member 532 is fixed to the left side of the lock member 531, and the other end is hung on a hook 522d (see FIG. 9) provided near the restricting portion 55. The elastic member 532 holds the posture of the lock member 531 by pulling the lock member 531 toward the restricting portion 55 so that the lock member 531 does not rotate carelessly.

  The locked member 533 is formed in a plate shape long in the length direction of the first support member 51 (length direction of the manual feed tray 120). The locked member 533 is fixed to the outer surface of the first support member 51.

  More specifically, a boss fixing hole 533a is provided on the right side of the locked member 533. The boss portion 515 of the first support member 51 is fitted into the boss portion fixing hole 533a.

  In the locked member 533, a fitting portion fixing hole 533b is provided on the left side of the boss portion fixing hole 533a. The fitting portion 516 of the first support member 51 is fitted into the fitting portion fixing hole 533b.

  Further, the locked member 533 is fixed to the first support member 51, so that it is synchronized with the rotation operation of the first support member 51.

  As described above, the rotation shaft 54 is fitted in the boss portion 515, and the rotation shaft 54 is fixed to the support hole 522c (see FIG. 9) of the attachment piece portion 522 by caulking. Therefore, the member to be locked 533 is rotatably supported by the attachment piece 522 via the rotation shaft 54 while being fixed to the first support member 51. As a result, the first support members 51 and 51 and the placement portion 2 are rotatably supported by the second support member 52 and the manual feed tray 120 via the rotation shaft 54.

  A locked portion 533 c that is locked to the locking portion 531 a of the lock member 531 is formed on the left side portion of the locked member 533. The locked portion 533c is formed in an inverted L shape so as to be locked on the upper surface of the locking portion 531a. The operation of locking the locked portion 533c with the locking portion 531a will be described with reference to FIG.

  As shown in (a) → (b) of FIG. 10, when the mounting portion 2 rotates upward from a horizontal state with respect to the second support member 52 (manual feed tray 120), the first support member 51. , 51 and the member to be locked 533 are also rotated upward.

  As shown in FIG. 10B, when the mounting portion 2 is tilted at a predetermined tilt angle, the locked portion 533 c of the locked member 533 is engaged with the upper surface of the locking portion 531 a of the lock member 531. Stopped. Thereby, the mounting part 2 is held in a tilted state with a predetermined tilt angle.

  As shown in (b) → (c) of FIG. 10, when the placement unit 2 is rotated upward from a predetermined tilt angle, the locked portion 533 c is detached from the locking portion 531 a. Thereby, the holding of the tilted state by the predetermined tilt angle of the mounting portion 2 is released.

  In the long sheet stacking tray 1 configured as described above, a developing operation and a storing operation will be described.

(Expand operation)
(1) As shown in FIG. 2 → FIG. 3, the manual feed tray 120 is rotated downward to be developed.
(2) The mounting portion 2 is pulled out from the manual feed tray 120 while being supported by the mounting portion 5, and the protrusion 514b of the pressing portion 514 is fitted into the recess 210b as shown in FIG. At this time, the placing portion 2 comes out of the restricting portion 55 (see FIG. 9). As a result, the mounting portion 2 becomes rotatable with the first support members 51 and 51.
(3) The mounting portion 2 is rotated upward as shown in FIGS. 10 (a) → (b). As shown in FIG. 10B, when the mounting portion 2 is in a tilted state with a predetermined tilt angle, the locked member 533 is locked to the lock member 531, and the mounting portion 2 is in a tilted state with a predetermined tilt angle. Retained. Thereby, the mounting part 2 will be in the expand | deployed state.
(4) As shown in FIG. 3, the extended mounting portion 3 is pulled out from the mounting portion 2 to the limit and developed. The auxiliary placement unit 4 is exposed and unfolded when the manual feed tray 120 is unfolded.

(Storing operation)
(1) The extended mounting portion 3 is moved in the storage direction (downward in the length direction 2A of the mounting portion 2 shown in FIG. 3) and stored in the mounting portion 2, and the locked portion 3a is mounted. The locking portion 2a of the portion 2 is locked.
(2) The mounting portion 2 is rotated upward from a predetermined tilt angle as shown in FIGS. As a result, the locked member 533 is detached from the lock member 531, and the holding of the mounting portion 2 in the tilted state is released.
(3) The mounting portion 2 is rotated downward so that the first support members 51 and 51 are brought into contact with the manual feed tray 120. In this state, the placement unit 2 is moved in the storage direction (downward in the length direction 120A of the manual feed tray 120 shown in FIG. 3) to accommodate the placement unit 2 and the extended placement unit 3 below the manual feed tray 120. To do.
(4) The manual feed tray 120 is rotated upward as shown in FIGS. 3 to 2 and is accommodated in the accommodating portion 100c. As a result, the auxiliary placement unit 4 is covered and stored by the manual feed tray 120.

  Next, effects of the long sheet stacking tray 1 according to the present embodiment will be listed and described.

  The long sheet stacking tray 1 according to the present embodiment is attached to the manual feed tray 120 so as to be movable in the longitudinal direction 120A of the manual feed tray 120 via the attachment portion 5 and places a long sheet together with the manual feed tray 120. 2 is provided.

  As a result, the loading unit 2 can be unfolded or stored by moving it in the longitudinal direction 120A of the manual feed tray 120. Therefore, the troublesome operation of folding upward from the lower side of the manual feed tray 120 at the time of unfolding is eliminated, and the troublesome operation of folding down to the lower side of the manual feed tray 120 at the time of storage is eliminated. Therefore, the long sheet stacking tray 1 of the present embodiment can be easily developed and stored.

  Further, in the long sheet stacking tray 1 according to the present embodiment, the attachment unit 5 supports the loading unit 2 pulled out from the manual feed tray 120 so as to be rotatable in the vertical direction with respect to the manual feed tray 120 and is tilted to a predetermined degree. I kept it at an angle. As a result, the long sheet is placed on the placing portion 2 with the upper portion raised, so that the long sheet is prevented from sagging. Therefore, the long sheet stacking tray 1 of the present embodiment can stably load long sheets.

  Further, the long sheet stacking tray 1 according to the present embodiment is attached to the placing unit 2 so as to be movable in the length direction 2A of the placing unit 2 and is an extension on which a long sheet is placed together with the manual feed tray 120 and the placing unit 2. A placement unit 3 is provided. Accordingly, it is possible to place a long sheet having a longer size that cannot be placed only by the placement unit 2. Therefore, the long sheet stacking tray 1 of the present embodiment can stably load many types of long sheets having different sizes.

  Further, the long sheet stacking tray 1 according to the present embodiment has a restriction that restricts the rotation of the placement unit 2 to the storage side from the pulling position where the placement unit 2 can place the long sheet on the attachment unit 5. A portion 55 is provided. As a result, the placement unit 2 can reliably rotate at the pull-out position where the long sheet can be placed. Accordingly, since the long sheet is placed on the placing portion 2 with the upper portion thereof being surely raised, the long sheet can be reliably prevented from sagging. Therefore, the long sheet stacking tray 1 of the present embodiment can load long sheets more stably.

  In the long sheet stacking tray according to the present embodiment, a guide portion 511 that supports the placement portion 2 and guides the movement of the placement portion 2 is provided in the attachment portion 5. This makes it possible to smoothly move the placement unit 2 in the length direction 120 </ b> A of the manual feed tray 120 when the placement unit 2 is expanded or stored. Therefore, the long sheet stacking tray 1 of the present embodiment can be more easily developed and stored.

  Further, in the long sheet stacking tray 1 of the present embodiment, the attachment portion 5 is provided with a pressing portion 514 that presses the lower surface 21b of the end portion 21 that is a contact surface with the guide portion 511 of the placement portion 2 by an elastic force. It was. As a result, the mounting portion 2 moves in a state where the lower surface 21b is pressed by the pressing portion 514, so that the placing portion 2 is suppressed from swinging and can be moved smoothly. Therefore, the long sheet stacking tray 1 of the present embodiment can be more easily developed and stored.

  Further, the long sheet stacking tray 1 of the present embodiment is provided with a concave portion 210b into which the pressing portion 514 is fitted at a lower limit position of the placement portion 2 on the lower surface 21b of the placement portion 2. As a result, the user can easily feel that the placement unit 2 has been pulled out to the limit. Therefore, the long sheet stacking tray 1 of the present embodiment can improve the operational feeling.

  Further, in the long sheet stacking tray 1 of the present embodiment, a guide portion 511 is formed so as to slide the placement portion 2. As a result, the placement unit 2 can be moved more smoothly when the placement unit 2 is deployed or stored. Therefore, the long sheet stacking tray 1 of the present embodiment can be more easily developed and stored.

  Further, in the long sheet stacking tray 1 of the present embodiment, the lower surface 512a that is a guide portion side contact surface that slidably contacts the placement portion 2 in the guide portion 511 is formed on an uneven surface. As a result, the accuracy of the lower surface 512a can be easily ensured as compared with the case where the lower surface 512a is formed on a flat surface, and the manufacturing cost can be reduced. Therefore, the long sheet stacking tray 1 of the present embodiment can be easily expanded and stored at a reduced manufacturing cost.

  Further, in the long sheet stacking tray 1 according to the present embodiment, the mounting portion 5 is in a tilted state with a predetermined tilt angle when the stacking portion 2 is rotated upward from the horizontal state with respect to the manual feed tray 120. Is provided with a lock portion 53 for holding the tilted state. Therefore, it is possible to easily place the placement unit 2 in a tilted state when the placement unit 2 is deployed. Therefore, the long sheet stacking tray 1 of the present embodiment can be further easily developed.

  Further, in the long sheet stacking tray 1 of the present embodiment, the lock unit 53 releases the holding of the tilted state when the stacking unit 2 is rotated upward from a predetermined tilt angle. Accordingly, it is possible to easily release the holding of the mounting portion 2 when the mounting portion 2 is stored. Therefore, the long sheet stacking tray 1 of the present embodiment can be stored more easily.

  Further, the long sheet stacking tray 1 of the present embodiment has the leading end side of the long sheet placed on the manual feed tray 120, the loading unit 2, and the extended loading unit 3 folded back to the color printer main body 100a side. An auxiliary placement unit 4 is provided. Accordingly, it is possible to place a long sheet having a longer size that cannot be placed only by the placement part 2 and the extension placement part 3. Therefore, the long sheet stacking tray 1 of the present embodiment can stably load many types of long sheets having different sizes.

  The auxiliary mounting portion 4 includes torsion springs 43 and 43 that hold the auxiliary mounting portion main body 41 at a predetermined tilt angle by a spring force. Accordingly, it is possible to stably place the leading end side of the long sheet without applying an excessive force to the auxiliary placement unit main body 41. Therefore, the long sheet stacking tray 1 of the present embodiment can load the long sheets more stably.

  In addition, the color printer 100 according to the present embodiment includes the long sheet stacking tray 1 described above, so that the long sheet stacking tray 1 can be easily expanded and stored, thereby improving convenience. it can.

  As mentioned above, although embodiment which concerns on this invention was illustrated, this embodiment does not limit the content of this invention. Various modifications can be made without departing from the scope of the claims of the present invention.

  For example, in the color printer 100 of the present embodiment, the long sheet stacking tray 1 is provided on the sheet feeding side, but may be provided on the sheet discharge side. Further, the long sheet stacking tray 1 may be provided on both the sheet feeding side and the sheet discharging side.

DESCRIPTION OF SYMBOLS 1 Long sheet stacking tray 2 Placement part 2A Length direction of a placement part 3 Extended placement part 21b The lower surface of the edge part of a placement part (contact surface with a guide part)
53 Locking part 55 Restricting part 100 Color printer (image forming apparatus)
100a Color printer main body (image forming apparatus main body)
100b Side surface of color printer body 120 Manual feed tray 120A Manual feed tray length direction 210b Concave portion 511 Guide portion 514 Pressing portion

JP 2009-57175 A

Claims (8)

It is attached to a manual feed tray provided on the side surface of the image forming apparatus main body so as to be tiltable, and is mounted so as to be movable in the length direction of the manual feed tray, and includes a placement unit on which a long sheet is placed together with the manual feed tray.
The mounting portion supports the placement portion pulled out from the manual feed tray so as to be pivotable in the vertical direction with respect to the manual feed tray and holds the placement portion at a predetermined tilt angle. A long sheet stacking tray, comprising: a lock portion that holds the tilted state when the tilted state is tilted to the predetermined tilt angle. The long sheet stacking tray according to claim 1,
A long sheet stack, wherein the long sheet stacking unit is attached to the placement unit so as to be movable in a length direction of the placement unit, and includes an extension placement unit on which the long sheet is placed together with the manual feed tray and the placement unit. tray. In the long sheet stacking tray according to claim 1 or 2 ,
A long sheet stacking tray, wherein the attachment portion is provided with a guide portion that supports the placement portion and guides the movement of the placement portion. In the long sheet stacking tray according to claim 3 ,
A long sheet stacking tray, wherein a pressing portion that presses a contact surface of the mounting portion with the guide portion by an elastic force is provided on the attachment portion. The long sheet stacking tray according to claim 4 ,
A long sheet stacking tray, wherein a concave portion into which the pressing portion is fitted is provided at a drawing limit position of the placement portion on the contact surface of the placement portion. In the long sheet stacking tray according to any one of claims 1 to 5 ,
The lock unit is configured to hold the tilted state when the mounting unit is rotated upward from a horizontal state with respect to the manual feed tray to be tilted at the predetermined tilt angle. Measure sheet stacking tray. The long sheet stacking tray according to any one of claims 1 to 6 ,
The long sheet stacking tray according to claim 1, wherein the lock unit releases the holding of the tilted state when the placing unit is rotated upward from the predetermined tilt angle. And an image forming apparatus main body, according to any one of the image forming apparatus and the manual feed tray provided to be tilted to the side of the sheet feeding side of the main body, the attached to the manual feed tray according to claim 1 to claim 7 A long sheet stacking tray.